XML 24 R12.htm IDEA: XBRL DOCUMENT
v3.23.1

Note 4 - Inventory | 12 Months Ended
--- | ---
Dec. 31, 2022
Notes to Financial Statements |
Inventory Disclosure [Text Block] | NOTE 4 - INVENTORY Inventory consisted of the following at December 31, 2022 and December 31, 2021:
|  | 2022 |  |  | 2021 |
Furnace parts and supplies |  | $ | 66,495 |  |  | $ | 213,224 |
Raw materials |  |  | 2,474,227 |  |  |  | 2,144,067 |
Work in process |  |  | 982,973 |  |  |  | 1,671,290 |
Finished goods and filtration systems |  |  | 1,201,533 |  |  |  | 1,660,916 |
Reserve for excess and obsolescence |  |  | (663,227 | ) |  |  | (268,470 | )
Net Inventory |  | $ | 4,062,001 |  |  | $ | 5,421,027 |
Inventory valuation adjustments for excess and obsolete inventory are calculated based on current inventory levels, movements, expected useful lives, and estimated future demand for the products. The increase in the reserve for excess and obsolescence is mainly explained by changes in product and sales mix, due to both market driven and strategic changes implemented during the year, and furthermore new and more conservative processes implemented as part of the ERP implementation.

X
- References No definition available. + Details
Name: | us-gaap_DisclosureTextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI https://asc.fasb.org/topic&trid=2126998 + Details
Name: | us-gaap_InventoryDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration